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Biology Ch. 19
19-2-Bacteria in Nature
Question | Answer |
---|---|
True/false-Bacteria are not vital to maintaining the living world | false |
As ________, bacteria help the ecosystem recycle nutrients | decomposers |
the process of converting nitrogen into a form plants can use is known as _________ __________ | nitrogen fixation |
name the two ways bacteria can cause disease | by damaging the tissues of the infected organism directly by breaking them down for food, or by releasing toxins that harm the body |
compounds that block the growth and reproduction of bacteria | antibiotics |
name some foods bacteria is used in the production of | sour cream, cheese, yogurt, buttermilk, pickles |
destroys bacteria by subjecting them either to great heat or to chemical action | sterilization |
a __________ is a chemical solution that destroys bacteria | disinfectant |
______means absence of life | sterile |